funda-ui/CascadingSelect/index.css

React components using pure Bootstrap 5+ which does not contain any external style and script libraries.

/* ======================================================
    <!-- Cascading Select -->
/* ====================================================== */
.cas-select__wrapper {
  --cas-select-arrow-fill: #a5a5a5;
  --cas-select-result-arrow-fill: #a5a5a5;
  --cas-select-result-font-size: 1rem;
  --cas-select-result-padding-x: 0.75rem;
  --cas-select-result-padding-y: 0.375rem;
}
.cas-select__wrapper .cas-select__result {
  position: absolute;
  left: auto;
  z-index: 1;
  top: 0;
  padding: var(--cas-select-result-padding-y) var(--cas-select-result-padding-x);
  font-size: var(--cas-select-result-font-size);
  font-weight: 400;
  line-height: 1.5;
  color: inherit;
  /* text */
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: calc(100% - 20px);
  /* required */
  display: flex;
}
.cas-select__wrapper .cas-select__result div {
  /* required */
  display: flex;
}
.cas-select__wrapper .cas-select__result span {
  padding: 3px;
}
.cas-select__wrapper .cas-select__result svg {
  margin: 0 0.3rem;
}
.cas-select__wrapper .cas-select__result svg path {
  fill: var(--cas-select-result-arrow-fill);
}
.cas-select__wrapper .cas-select__closemask {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0);
  user-select: none;
}
.cas-select__wrapper .cas-select__trigger {
  position: relative;
  z-index: 0;
}
.cas-select__wrapper .cas-select__val {
  position: relative;
}
.cas-select__wrapper .cas-select__val input {
  cursor: pointer;
  color: transparent !important;
}
.cas-select__wrapper .cas-select__val input:focus {
  color: transparent !important;
}
.cas-select__wrapper .cas-select__val .arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: 0.5rem;
}
.cas-select__wrapper .cas-select__val .arrow svg .arrow-fill-g {
  fill: var(--cas-select-arrow-fill);
}

/*------ List ------*/
.cas-select__items-wrapper {
  --cas-select-opt-font-size: 0.875rem;
  --cas-select-opt-padding-x: .4rem;
  --cas-select-opt-padding-y: .3rem;
  --cas-select-opt-header-border-color: rgba(1, 1, 1, .2);
  --cas-select-opt-header-text-color: #999;
  --cas-select-opt-hover-bg: #f7f7f7;
  --cas-select-opt-active-bg: #eeeeee;
  --cas-select-items-box-shadow: 0 5px 15px 5px rgba(80, 102, 224, 0.08);
  --cas-select-items-bg: #fff;
  --cas-select-items-color: inherit;
  --cas-select-items-border-color: rgba(0, 0, 0, .1);
  --cas-select-items-li-border-color: #eee;
  --cas-select-loader-color: #000000;
  --cas-select-clean-btn-color: #b5b5b5;
  --cas-select-searchbox-border-color: #ddd;
  box-shadow: var(--cas-select-items-box-shadow);
  position: absolute;
  left: auto;
  max-height: 300px;
  border: 1px solid var(--cas-select-items-border-color);
  background: var(--cas-select-items-bg);
  padding: 10px;
  overflow-y: auto;
  box-sizing: border-box;
  top: 2.3rem;
  border-radius: 5px;
  width: max-content;
  /* required -> the content will not wrap at all even if it causes overflows*/
  color: var(--cas-select-items-color);
  display: none;
  z-index: 1055; /* --bs-modal-zindex */
  /* each item */
  /* Searchbox */
  /* Options */
}
.cas-select__items-wrapper.active {
  display: block !important;
}
.cas-select__items-wrapper ul,
.cas-select__items-wrapper li {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cas-select__items-wrapper .cas-select__items-loader {
  position: absolute;
  pointer-events: none;
  left: 0;
  top: 0;
  margin-left: 5px;
  z-index: 1;
  width: 12px;
  height: 12px;
  text-align: center;
  transform-origin: center;
  transform: translate(2px, 5px) rotate(0);
  animation: 1s linear infinite cas-select__spinner;
}
.cas-select__items-wrapper .cas-select__items-loader svg {
  vertical-align: top;
}
.cas-select__items-wrapper .cas-select__items-loader svg path {
  fill: var(--cas-select-loader-color);
}
@keyframes cas-select__spinner {
  to {
    transform: translate(2px, 5px) rotate(-360deg);
  }
}
.cas-select__items-wrapper .cas-select__close svg {
  opacity: 0.4;
}
.cas-select__items-wrapper .cas-select__close:hover svg {
  transition: 0.2s ease-out;
  opacity: 0.7;
}
.cas-select__items-wrapper ul {
  transition: 0.2s ease-out;
  min-width: 8px;
  min-height: 9px;
}
.cas-select__items-wrapper ul > li {
  position: relative;
  cursor: pointer;
  float: left;
  padding: 0 10px;
  margin-right: 15px;
  border-right: 1px dotted var(--cas-select-items-li-border-color);
  transition: 0.2s ease-out;
}
.cas-select__items-wrapper ul > li.hide-col {
  display: none;
}
.cas-select__items-wrapper ul > li:last-child {
  margin-right: 0;
  border-right: none;
}
.cas-select__items-wrapper .cas-select__items-col-searchbox input {
  border: 1px solid var(--cas-select-searchbox-border-color);
  border-radius: 0.35rem;
  background: transparent;
  font-size: 0.75rem;
}
.cas-select__items-wrapper .cas-select__opt {
  padding: var(--cas-select-opt-padding-y) var(--cas-select-opt-padding-x);
  font-size: var(--cas-select-opt-font-size);
  border-radius: 2px;
}
.cas-select__items-wrapper .cas-select__opt:hover {
  background: var(--cas-select-opt-hover-bg);
}
.cas-select__items-wrapper .cas-select__opt.active {
  background: var(--cas-select-opt-active-bg);
}
.cas-select__items-wrapper .cas-select__opt-header {
  padding: var(--cas-select-opt-padding-y) var(--cas-select-opt-padding-x);
  font-size: var(--cas-select-opt-font-size);
  border-bottom: 1px dotted var(--cas-select-opt-header-border-color);
  border-radius: 2px;
  position: sticky;
  top: calc(var(--cas-select-opt-font-size) * -1);
  background: var(--cas-select-items-bg);
  color: var(--cas-select-opt-header-text-color);
  display: flex;
  align-items: center;
}
.cas-select__items-wrapper .cas-select__opt-header > span {
  cursor: default;
}
.cas-select__items-wrapper .cas-select__opt-header:hover {
  background: var(--cas-select-opt-hover-bg);
}
.cas-select__items-wrapper .cas-select__opt-header.active {
  background: var(--cas-select-opt-active-bg);
}
.cas-select__items-wrapper .cas-select__opt-header .cas-select__opt-header__clean {
  display: inline-block;
  margin-left: 0.2rem;
  padding: 0.1rem;
}
.cas-select__items-wrapper .cas-select__opt-header .cas-select__opt-header__clean:hover {
  transform: scale(1.1);
}
.cas-select__items-wrapper .cas-select__opt-header .cas-select__opt-header__clean svg {
  border: 1px var(--cas-select-clean-btn-color) solid;
  border-radius: 50%;
}
.cas-select__items-wrapper .cas-select__opt-header .cas-select__opt-header__clean svg path {
  fill: var(--cas-select-clean-btn-color);
}